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How is inhaled air different from exhale air?

In: Human Physiology [Edit categories]

Answer:

Air in the atmosphere is a mix of about 78% nitrogen, 20.95% oxygen, 0.93% argon, and 0.038% carbon dioxide (CO₂)

When air is breathed in (inhaled) oxygen is absorbed by the lungs, exchanging it for waste carbon dioxide, carrying the CO₂ away from the body when exhaled.

Exhaled air has a CO₂ content of about 5%, i.e. 125 times more CO₂ than inhaled air.

First answer by BrainBlocked. Last edit by BrainBlocked. Contributor trust: 457 [recommend contributor ]. Question popularity: 2 [recommend question].

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WikiPedia: Components of Inhaled and Exhaled Air

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